summaryrefslogtreecommitdiff
path: root/malloc/tst-malloc-usable.c
blob: 190a457cb5c3e199b0e46e7f2155016ca239f873 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
/* Ensure that malloc_usable_size returns the request size with
   MALLOC_CHECK_ exported to a positive value.

   Copyright (C) 2012-2015 Free Software Foundation, Inc.
   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, see
   <http://www.gnu.org/licenses/>.  */

#include <malloc.h>
#include <string.h>
#include <stdio.h>

static int
do_test (void)
{
  size_t usable_size;
  void *p = malloc (7);
  if (!p)
    {
      printf ("memory allocation failed\n");
      return 1;
    }

  usable_size = malloc_usable_size (p);
  if (usable_size != 7)
    {
      printf ("malloc_usable_size: expected 7 but got %zu\n", usable_size);
      return 1;
    }

  memset (p, 0, usable_size);
  free (p);
  return 0;
}

#define TEST_FUNCTION do_test ()
#include "../test-skeleton.c"